120855120000 has 160 divisors (see below), whose sum is σ = 401149153680. Its totient is φ = 32227968000.

The previous prime is 120855119993. The next prime is 120855120049. The reversal of 120855120000 is 21558021.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11782 + ... + 491781.

Almost surely, 2^120855120000 is an apocalyptic number.

120855120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120855120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200574576840).

120855120000 is an abundant number, since it is smaller than the sum of its proper divisors (280294033680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120855120000 is an frugal number, since it uses more digits than its factorization.

120855120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503600 (or 503573 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 120855120000 its reverse (21558021), we get a palindrome (120876678021).

The spelling of 120855120000 in words is "one hundred twenty billion, eight hundred fifty-five million, one hundred twenty thousand".